A method is provided for the validation of a network by a checking module, the network comprising a plurality of routers, each of the routers comprising a plurality of output ports, each of the output ports of the routers being associated with a bandwidth budget, a priority latency budget and a plurality of network budget grains. The method comprises, for each of the ports of each of the routers, steps of: calculation of a latency consumed on the output port of the router on the basis of the network budget grains and the bandwidth budget; checking of the compatibility of the latency consumed on the output port with the priority latency budget grains of the output port of the router; and, transmission by the checking module of a signal indicating the result of the check.